MandAzur/src/julia.s

/*
int julia(int32_t cr, int32_t ci, uint32_t t_squared, int steps, int32_t zr, int32_t zi);
(Pour moi : t_squared = (2 * 2) << 16, steps = 50)
Si renvoie 0 -> dans la fractale
Sinon renvoie un nombre entre 1...steps indiquant la "distance" (pour le dégradé)
*/

.global _julia
.text

/* Iteration of z = z²+c with threshold checks
   @r4   Real part of c, cr
   @r5   Imaginary part of c, ci
   @r6   Squared threshold t²
   @r7   Number of steps
   If c is in the set, returns 0. Otherwise, returns the remaining number of
   iterations to be checked before the process finised. */

_julia:
	mov.l	r8, @-r15
	mov.l	r9, @-r15
	mov.l	r10, @-r15
	mov.l	r11, @-r15

.loop:

.end:

	rts
	nop